碱性氨基酸制备负载型CuO、ZnO催化剂用于甘油选择性氧化制备1,3-二羟基丙酮的研究  

Preparation of basic amino acid supported CuO and ZnO catalysts for selective oxidation of glycerol to 1,3-dihydroxyacetone

作　　者：郑丽英 刘海[1,2] 柯义虎[1,2] 姜国平 ZHENG Li-ying;LIU Hai;KE Yi-hu;JIANG Guo-ping(Chemical Science and Engineering College,North Minzu University,Yinchuan 750021,China;Key Laboratory for Chemical Engineering and Technology of National Ethnic Affairs Commission of China,North Minzu University,Yinchuan 750021,China)

机构地区：[1]北方民族大学化学与化学工程学院,宁夏银川750021 [2]北方民族大学,国家民委化工技术基础重点实验室,宁夏银川750021

出　　处：《现代化工》2022年第11期129-135,140,共8页Modern Chemical Industry

基　　金：宁夏自然科学基金项目(2021AAC03200);宁夏高等学校科学研究项目(NGY2020055);国家自然科学基金地区项目(21862001)。

摘　　要：通过碱性氨基酸精氨酸(Arg)和组氨酸(His)制备负载型Au/CuO和Au/ZnO催化剂,利用XRD、XPS、TEM、BET等对催化剂进行表征,研究不同条件对甘油选择性催化氧化性能的影响。结果表明,当氨基酸浓度为10~15 mmol/L、Au负载量为1%、反应温度为80℃时,催化剂表现出较好的催化氧化性能。反应时间为6 h时,His-Au/CuO的甘油转化率为97%,1,3-二羟基丙酮(DHA)选择性为79%;反应时间为4 h时,Arg-Au/ZnO的转化率为97%,DHA选择性为74%。The supported Au/CuO and Au/ZnO catalysts are prepared by arginine and histidine,respectively,and characterized by means of XRD,XPS,TEM and BET.The effects of different conditions on the catalytic performance of the catalysts for selective oxidation of glycerol are investigated.The results show that the catalyst shows good catalytic performance when the concentration of amino acid is 10-15 mmol·L^(-1),the loading amount of Au is 1%,and the reaction temperature is 80℃.The conversion rate of glycerol reaches 97%and the selectivity of 1,3-dihydroxyacetone reaches 79%when histidine-Au/CuO is employed and the reaction lasts for 6 h.The conversion rate of glycerol reaches 97%and the selectivity of 1,3-dihydroxyacetone reaches 74%when arginine-Au/ZnO is employed and the reaction has performed for 4 h.

关 键 词：氨基酸 甘油选择性氧化 1 3-二羟基丙酮 AU纳米粒子 无碱条件 

分 类 号：O643.361[理学—物理化学]